参数资料
型号: XRT94L31IB
厂商: Exar Corporation
文件页数: 21/133页
文件大小: 0K
描述: IC MAPPER DS3/E3/STS-1 504TBGA
标准包装: 24
应用: 网络切换
接口: 总线
电源电压: 3.14 V ~ 3.47 V
封装/外壳: 504-LBGA
供应商设备封装: 504-TBGA(35x35)
包装: 托盘
安装类型: 表面贴装
XRT94L31
117
REV. 1.0.1
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
NOTE: The value for t13 and t14 can be found in
1.4.5
The Transmit STS-1/STM-0 Telecom Bus Interface Timing (for Channel 0 when configured to
operate in the STS-3/STM-1 Mode)
In the Transmit STS-1/STM-0 Telecom Bus Interface (associated with Channel 0) all of the signals (which are
input via this Bus Interface) are sampled upon the rising edge of TxA_CLK (19.44MHz clock signal).
Figure 21 presents an illustration of the waveforms and the timing parameters (t13 and t14) of the signals that
will be received by the Transmit STS-1/STM-0 Telecom Bus Interface.
FIGURE 20. AN ILLUSTRATION OF THE WAVEFORMS OF THE SIGNALS THAT ARE INPUT VIA THE TRANSMIT STS-1/
STM-0 TELECOM BUS INTERFACE
TABLE 21: TIMING INFORMATION FOR THE TRANSMIT STS-1/STM-0 TELECOM BUS INTERFACE
SYMBOL
DESCRIPTION
MIN.
TYP.
MAX.
t13
TxA_D[7:0], TxA_PL, TxA_C1J1, TxA_ALARM and TxA_DP to rising edge
of TxA_CLK set-up time requirements
4ns
t14
Rising edge of TxA_CLK to TxA_D[7:0], TxA_PL, TxA_C1J1, TxA_ALARM
and TxA_DP hold time requirements
0 ns
TxA_CLK
TxA_D[7:0]
TxA_PL
TxA_C1J1
A2
C1
J1
Data
t13
t14
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